Let's get real.
Pre-bought 500 18x13 cm prints at my local lab (member of a nation wide franchise ring) : 150 € ; that's 0.30 €/print. They're at foot reach, but I could as well trade with them by internet and get the prints by mail the next day. It's not the best bargain, but the quality is decently constant. And they won't make me pay for their mistakes, so I don't pay for botched prints (and being an ex-wet lab afficionado, I can tell you there's always waste to calibration and various tries). They've got a range of products from postcards to binded books you can print your photos on.Trade off : their minilab knows only about Jpeg in sRGB colourspace. Could certainly do fancier things, but that would imply training the already underpaid workforce. I know another, more professional lab, that will happily let you download their printer icm profile and print exactly what you send them ; better know what you're doing beforehand, because it's a no money back option (if you miss your prophoto conversion, you can get nasty out of gamut imaginary colours), but still it's way less expensive than the Shelpy.
So, to make sense, the Shelpy should offer me complete control over the prints, but your review doesn't cover that area (specifically the colourspace profile of the device, and how you can match whatever your camera outputs to that colourspace). I'm making a wild guess here, but by the sound of it the process is closer to CMYK printing than ink printing. So we can expect a quite narrow gamut. Even low end cameras have a massively wider colourspace to save your pictures to, and matching the colours is the most important part of the work. Not doing it is like buying the latest yamaha motorbike and wrapping gardenhose over the wheels instead of proper tyres, "because they're both rubber, you know".
I wish your review had addressed this important area. If I can't have more control over the process than giving a correct sRGB file to my local lab and asking them to keep their hands in their pockets (which they happily do), I can't see the value of this printer.